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Index only advances on a match — JavaScript debugging challenge | BugHunt

javascriptInfinite loopMedium

Index only advances on a match

Time: 0:00

What it should do

countUppercase(text) should count the uppercase letters, so countUppercase("aBc") returns 1.

What goes wrong

countUppercase("ABC") returns 3, but countUppercase("aBc") never finishes.

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Hints

This is an infinite loops bug

The tab freezes, nothing prints, and the loop condition never becomes false.

Learn the infinite loops pattern